So his performance till Dec/Jan just gets erased? This means he will be reviewed after 1 and half years.
I know De Jong got reviewed after couple of days but Adams is no De Jong. Not sure how many SW members will knock on their door to let SW know

It's hard to say if Son will increase, he has gone quiet.
Pogba and Coutinho. Countinho coz he has age on his side. Koke not bad option either but it seems he is married to Atleti and Atleti is producing dross football atm.

The real clubs (if external) bids between 10-20% above CV and that the highest. Other clubs will bid too if you leave it long but it's like just 100k above CV.
In my experience if it's the first time external club is bidding and if you reject it, you will get slightly better offer the second time. But sometimes it takes two weeks for the second bid to come.
PS: You have to reject the first bid and not wait for it to be automatically rejected.